androidandroid-constraintlayoutconstraint-layout-chains

Constraint Layout not visible on the Layout file...And getting the error while inflating any view on it


I am using the constraint layout (android.support.constraint.ConstraintLayout) as the main layout in my XML file. As we get the two View of layout(One is for User View And Second is for the drag and drop the view and provide the relation between them) .But i am getting only one window which is totally blank and look alike below :-enter image description here

And getting this error while using any view in my layout.Please check below image for it

enter image description here

My layout file is as below:-

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/constraintLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:layout_editor_absoluteY="25dp"
    tools:layout_editor_absoluteX="0dp">

    <ImageView
        android:id="@+id/image_shot"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        tools:layout_editor_absoluteY="0dp"
        tools:layout_editor_absoluteX="0dp" />

</android.support.constraint.ConstraintLayout>

I have tried the below solution on SO, but it is not working for me,Please check the link , which i have searched

1. First Link
2. Second Link
3. Third Link

Please help me to short out from this problem.Thanks


Solution

  • This is because you don't give any constraint for ImageView. When you give constraint to ImageView then that warning will be removed.

    Like below.

    <?xml version="1.0" encoding="utf-8"?>
    <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/constraintLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:layout_editor_absoluteX="0dp"
        tools:layout_editor_absoluteY="25dp">
    
        <ImageView
            android:id="@+id/image_shot"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginLeft="8dp"
            android:layout_marginTop="8dp"
            android:src="@mipmap/ic_launcher"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    
    </android.support.constraint.ConstraintLayout>
    

    set your gradle like below.

    apply plugin: 'com.android.application'
    
    apply plugin: 'kotlin-android'
    
    apply plugin: 'kotlin-kapt' // for Databinding
    
    apply plugin: 'kotlin-android-extensions'
    
    android {
        compileSdkVersion 25
        buildToolsVersion "25.0.2"
        defaultConfig {
            applicationId "com.hellokotlin"
            minSdkVersion 15
            targetSdkVersion 25
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
        android {
            dataBinding {
                enabled = true
            }
        }
    }
    
    dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
        implementation 'com.android.support:appcompat-v7:25.4.0'
        testImplementation 'junit:junit:4.12'
        implementation 'com.android.support.constraint:constraint-layout:1.0.2'
        implementation 'com.android.support:recyclerview-v7:25.4.0'
        kapt 'com.android.databinding:compiler:2.3.1'       // for Databinding
    }
    

    Support lib version and buildToolsVersion

    buildToolsVersion "25.0.2"
    
    defaultConfig {
            applicationId "com.hellokotlin"
            minSdkVersion 15
            targetSdkVersion 25
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
    implementation 'com.android.support:appcompat-v7:25.4.0'